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Simplifying cos(2x) + 4cos(x) + -3 = 0 Remove parenthesis around (2x) cos * 2x + 4cos(x) + -3 = 0 Reorder the terms for easier multiplication: 2cos * x + 4cos(x) + -3 = 0 Multiply cos * x 2cosx + 4cos(x) + -3 = 0 Multiply cos * x 2cosx + 4cosx + -3 = 0 Reorder the terms: -3 + 2cosx + 4cosx = 0 Combine like terms: 2cosx + 4cosx = 6cosx -3 + 6cosx = 0 Solving -3 + 6cosx = 0 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + 6cosx = 0 + 3 Combine like terms: -3 + 3 = 0 0 + 6cosx = 0 + 3 6cosx = 0 + 3 Combine like terms: 0 + 3 = 3 6cosx = 3 Divide each side by '6osx'. c = 0.5o-1s-1x-1 Simplifying c = 0.5o-1s-1x-1
| 5x-7y=92 | | (4x^2)^0/2xy^5 | | 2ln(x+2)=-2 | | 3x+9+2x+21=6x-13 | | n^4+8n^2+15=0 | | X/17=3/5 | | D^2-4D+3=e^3x | | k+9=-9 | | 134.31=6s+15.27 | | 9.1=0.35 | | (2b-4)/2=(b-3)/6 | | log(3x)-log(15)=3 | | 1(5m+15)=5 | | 4r=192 | | -2n+4(2-n)=(4n+32) | | (4+z)(3z+7)=0 | | 13-5-6(-6)= | | e*x+2=e*1-x | | D^2+4d-60=0 | | 3z^2+19z=28 | | X=44+(X*0.22) | | 3p^2-4p-30=2 | | (y+10z+100x)=(z+10y+100x)-27 | | x(7x)=7 | | 134.31=4s+15.27 | | 1(n+3)=9 | | 3(b+1)+b=3(b-2)-1 | | 13/12y=1/6-8/15 | | X=40+(X*0.22) | | 150+25x=55x+60 | | 5x(-2)+10= | | 134.31=4s+1527 |